A tensile-to-bending test fixture and apparatus

Abstract

The utility model discloses a kind of tensile bending test tool and device, wherein tensile bending test tool includes: fixed base and the tensile seat for with tensile testing machine driving end butt joint, the fixed base is slidably installed with a pair of symmetrically left and right distribution sliding base, a pair of front and rear distribution roll shaft fixed link is fixed in the fixed base middle position, a pair of roll shaft fixed link is rotatably installed with bending roll;Bending plate assembly is used to cooperate bending roll and carry out bending test to structural steel, bending plate assembly includes a pair of symmetric distribution bending bottom plate, bending bottom plate has the inclined top wall of downwards towards bending roll direction, the end of each bending bottom plate close to bending roll is rotatably connected with the sliding base of corresponding side;A pair of symmetric left and right distribution connection swing arm group, the upper end of each side connection swing arm group is rotatably connected with tensile seat, the utility model structure is reasonable, and structural steel can be better bent to test, so that its bending angle satisfies processing demand.

Claims

1. A stretch-to-bend test fixture characterized by, include: The fixed base (1) and the tensile seat (3) for docking with the drive end of the tensile testing machine (5) are provided. A pair of sliding bases (2) symmetrically distributed on the left and right are slidably installed on the fixed base (1). A pair of roller fixing rods (11) distributed in front and behind are fixed in the middle position of the fixed base (1). A curved roller (12) is rotatably installed on the pair of roller fixing rods (11). A bending plate assembly is used to perform bending tests on structural steel in conjunction with a bending roller (12). The bending plate assembly includes a pair of symmetrically distributed bending base plates (23). The bending base plates (23) have an inclined top wall facing downward toward the bending roller (12). The end of each bending base plate (23) near the bending roller (12) is rotatably connected to a sliding base (2) on the corresponding side. A pair of symmetrically distributed connecting swing arms are provided. The upper end of each connecting swing arm is rotatably connected to the tension seat (3), and the lower end of each connecting swing arm is rotatably connected to the end of the bending base plate (23) away from the bending roller (12) on the corresponding side, which is used to pull the bending plate assembly to move.

2. A stretch-to-bend test fixture according to claim 1, wherein: It also includes an adjustment assembly, which includes a pair of adjustment seats (4) fixed at both ends of the fixed base (1), an adjustment screw (41) is rotatably installed between the pair of adjustment seats (4), a pair of sliding bases (2) are respectively threaded onto the left and right sides of the adjustment screw (41), and an adjustment wheel (42) is rotatably installed at the end of the adjustment seat (4), the end of the adjustment wheel (42) is drivenly connected to the shaft end of the adjustment screw (41).

3. A stretch-to-bend test fixture according to claim 2, wherein: The adjusting screw (41) has opposite threads on the left and right sides.

4. A stretch-to-bend test fixture according to claim 3, wherein: The fixed base (1) is also provided with a sliding groove (13) at the bottom. The sliding base (2) is provided with connecting sliders (25) at corresponding positions on the front and rear sides. The connecting sliders (25) are slidably installed in the sliding groove (13).

5. A stretch-to-bend test fixture according to claim 4, wherein: The lower end of the curved base plate (23) is fixed with a pair of connecting plates (22) distributed in front and behind. The end of the connecting plate (22) near the bending roller (12) is rotatably connected to the connecting seat (21) on the sliding base (2) through the inner rotating shaft (221). The end of the connecting plate (22) away from the bending roller (12) is rotatably connected to the lower end of the connecting swing arm assembly through the outer rotating shaft (222).

6. A stretch-to-bend test fixture according to claim 5, wherein: The tension seat (3) is fixedly connected to a vertically extending tension rod (31), and the lower end of the tension rod (31) is fixed with a tension shaft (32). The connecting arm assembly includes a pair of connecting arms (24) distributed front and rear. The upper ends of the connecting arms (24) are rotatably connected to the tension shaft (32), and the lower ends of the connecting arms (24) are rotatably connected to the corresponding outer rotating shaft.

7. A stretch-to-bend test fixture according to claim 6, wherein: The central axes of the inner rotating shaft (221), the outer rotating shaft (222), the stretching shaft (32), and the bending roller (12) are parallel to each other.

8. A stretch-to-bend test fixture as defined in claim 1, wherein: An adjustment plate (26) is also installed on the curved base plate (23).

9. A tensile to bend test apparatus characterised in that: Includes the tensile bending test fixture as described in any one of claims 1-8; Also include a tensile testing machine (5), the fixed base (1) is fixedly installed on the lower clamp seat (51) of the tensile testing machine (5), and the tensile seat (3) is fixedly installed on the upper clamp seat (52) of the driving end of the tensile testing machine (5).

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